Optical Character Recognition (Unicode block)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Optical Character Recognition
Range U+2440..U+245F
(32 code points)
Plane BMP
Scripts Common
Symbol sets OCR controls
Assigned 11 code points
Unused 21 reserved code points
Unicode version history
1.0.0 11 (+11)
Note: [1][2]

Optical Character Recognition is a Unicode block containing signal characters for OCR standards.

Character table[edit]

Optical Character Recognition[1][2]
Official Unicode Consortium code chart (PDF)
  0 1 2 3 4 5 6 7 8 9 A B C D E F
U+244x
U+245x
Notes
1.^ As of Unicode version 7.0
2.^ Grey areas indicate non-assigned code points

Subheadings[edit]

The Optical Character Recognition block has three informal subheadings (groupings) within its character collection: OCR-A, MICR, and OCR.[3]

OCR-A[edit]

The OCR-A subheading contains six characters taken from the OCR-A font described in the ISO 1073-1:1976 standard: U+2440 ocr hook, U+2441 ocr chair, U+2442 ocr fork, U+2443 ocr inverted fork, U+2444 ocr belt buckle, and U+2445 ocr bow tie. The OCR bow tie is given the informative alias "unique asterisk".

MICR[edit]

The MICR subheading contains four characters standardized in the ISO 1004:1995 standard, from the magnetic ink character recognition E-13B font: U+2446 ocr branch bank identification, U+2447 ocr amount of check, U+2448 ocr dash, and U+2449 ocr customer account number. The latter two characters are misnamed but have correct normative aliases: U+2448  is MICR ON US SYMBOL, and U+2449  is MICR DASH SYMBOL (the standard notes that "the Unicode character names include several misnomers"). All four characters have informative aliases: "transit", "amount", "on us", and "dash" respectively.

OCR[edit]

The OCR subheading consists of a single character: U+244A ocr double backslash.

References[edit]

  1. ^ "Unicode character database". The Unicode Standard. Retrieved 22 March 2013. 
  2. ^ The Unicode Standard Version 1.0, Volume 1. Addison-Wesley Publishing Company, Inc. 1990, 1991. ISBN 0-201-56788-1. 
  3. ^ "Unicode Code Charts: Optical Character Recognition". The Unicode Standard, Version 6.3. Retrieved 27 February 2014.